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The processes occurring in a multilayer metallization during the fabrication of contacts to AlGaAs/GaAs quantum well heterostructures are analyzed using contact resistance measurements, microstructural analysis of the constituent metallic layers, and calculations of diffusion profiles. The...

In this paper, the output performances at 1331 nm in continuous-wave (CW) operation and the passive Q-switching regime of a Nd:Gd3Ga5O12(Nd:GGG) laser crystal have been investigated under pumping with diode lasers. A maximum CW output power of 1.5 W was reached at an incident pump power of 7.5...

We report a high-power laser-diode-array end-pumped 0.3 at.?% Nd:GdVO4 continuous-wave laser operating at 1.34 Âµm. The maximum output power of 13.3 W was obtained at the incident pump power of 49.2 W, giving the corresponding optical conversion efficiency of 27% and the average slope...

A high-efficiency diode-end-pumped Q-switched eye-safe linearly-polarized intracavity Raman laser at 1531 nm is demonstrated, with Nd:YVO4 as the laser medium and SrWO4 as the Raman crystal. The highest average power of 1.93 W is achieved, with an incident pump of 15.6 W and a repetition rate of...

Optical and electrical characteristics of different high-power multimode laser diodes with an emission wavelength of 835 nm are compared; the diodes were obtained on the basis of three systems of solid solutions: AlGaAS/GaAs, AlGaAs/GaAsP, and (Al)GaInP/GaInAsP. An output continuous optical...

The method of the obtaining quinary solid solutions on the basis of AIIIBV compounds (GaInPAsSb) with specified properties was developed. New GaInPAsSb/GaSb, GaInPAsSb/InAs heterostructures were obtained to create optoelectronic devices for the 2-5 Âµm spectral range. The broken-gap type II...

Examines the use of optoelectronic feedback for output stabilization of current modulated laser diodes. Methods for jitter reduction during current modulation; Comparison between output power and output power after a time delay; Accounts on time traces and power spectra; Low frequency...

We report an extensive comparison of the laser performances of diode-pumped Yb3+:YLF (30% at.) and Yb3+:CaF2 (5% at.) crystals, lasing at room-temperature and operating in two different operation modes, i.e. Continuous Wave (CW) and quasi-CW. An in-depth investigation of the crystals behavior by...